A smaller size, giving the full-size USB Type-C plug similar dimensions to the micro-USB format used by many smartphones and tablets

Support for scalable power charging, allowing the cable to offer up to 100 watts

Data speed transfers of up to 10 Gbps, double what is possible at the moment

A promise that the new design will accommodate further upgrades

"This allows USB to increase performance and continue to deliver ease of use to several evolving product categories for years to come," said Roland Sperlich, from Texas Instruments.

One industry watcher welcomed news of the update.

Apple's Lightning connector is already reversible

"I don't think consumers buy devices based on the type of plug, so in terms of driving adoption of a certain type of smartphone, tablet or PC it doesn't make a great deal of difference," said Ian Fogg, from consultants IHS.

"Where I think it is important is the convenience of using the devices, and increasingly USB is used not just to connect and share data, but as a way of charging our machines.

"Anything that makes it easier and more convenient to charge is a good thing as it's something we all have to do very frequently."